dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2013      Mellanox Technologies, Inc.
dnl                         All rights reserved.
dnl Copyright (c) 2013-2014 Cisco Systems, Inc.  All rights reserved.
dnl Copyright (c) 2014      Intel, Inc. All rights reserved
dnl Copyright (c) 2014      Research Organization for Information Science
dnl                         and Technology (RIST). All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl

AC_DEFUN([OSHMEM_CONFIGURE_OPTIONS],[
opal_show_subtitle "OSHMEM Configuration options"

AC_SUBST(OSHMEM_LIBSHMEM_EXTRA_LIBS)
AC_SUBST(OSHMEM_LIBSHMEM_EXTRA_LDFLAGS)

#
# Disable Open SHMEM?
#
AC_MSG_CHECKING([if want oshmem])
AC_ARG_ENABLE([oshmem],
              [AC_HELP_STRING([--enable-oshmem],
                              [Enable building the OpenSHMEM interface (available on Linux only, where it is enabled by default)])],
              [oshmem_arg_given=yes],
              [oshmem_arg_given=no])
if test "$oshmem_arg_given" = "yes"; then
    if test "$enable_oshmem" = "yes"; then
        AC_MSG_RESULT([yes])
        if test "$opal_found_linux" != "yes"; then
            AC_MSG_WARN([OpenSHMEM support was requested, but currently])
            AC_MSG_WARN([only supports Linux.])
            AC_MSG_ERROR([Cannot continue])
        fi
    else
        AC_MSG_RESULT([no])
    fi
else
    if test "$opal_found_linux" = "yes"; then
        enable_oshmem=yes
        AC_MSG_RESULT([yes])
    else
        enable_oshmem=no
        AC_MSG_RESULT([not supported on this platform])
    fi
fi

#
# Enable compatibility mode
#
AC_MSG_CHECKING([if want SGI/Quadrics compatibility mode])
AC_ARG_ENABLE(oshmem-compat,
        AC_HELP_STRING([--enable-oshmem-compat],
            [enable compatibility mode (default: enabled)]))
if test "$enable_oshmem" != "no" -a "$enable_oshmem_compat" != "no"; then
    AC_MSG_RESULT([yes])
    OSHMEM_SPEC_COMPAT=1
else
    AC_MSG_RESULT([no])
    OSHMEM_SPEC_COMPAT=0
fi
AC_DEFINE_UNQUOTED([OSHMEM_SPEC_COMPAT], [$OSHMEM_SPEC_COMPAT],
                   [Whether user wants OSHMEM in compatibility mode or not])



#
# Do we want to disable OSHMEM parameter checking at run-time?
#
AC_MSG_CHECKING([if want OSHMEM API parameter checking])
AC_ARG_WITH(oshmem-param-check,
    AC_HELP_STRING([--oshmem-param-check(=VALUE)],
                   [behavior of OSHMEM API function parameter checking.  Valid values are: always, never.  If --with-oshmem-param-check is specified with no VALUE argument, it is equivalent to a VALUE of "always"; --without-oshmem-param-check is equivalent to "never" (default: always).]))
if test "$enable_oshmem" != "no"; then
    if test "$with_oshmem_param_check" = "no" -o \
        "$with_oshmem_param_check" = "never"; then
        shmem_param_check=0
        AC_MSG_RESULT([never])
    elif test "$with_oshmem_param_check" = "yes" -o \
        "$with_oshmem_param_check" = "always" -o \
        -z "$with_oshmem_param_check"; then
        shmem_param_check=1
        AC_MSG_RESULT([always])
    else
        AC_MSG_RESULT([unknown])
        AC_MSG_WARN([*** Unrecognized --with-oshmem-param-check value])
        AC_MSG_WARN([*** See "configure --help" output])
        AC_MSG_WARN([*** Defaulting to "runtime"])
    fi
else
    shmem_param_check=0
    AC_MSG_RESULT([no])
fi
AC_DEFINE_UNQUOTED(OSHMEM_PARAM_CHECK, $shmem_param_check,
    [Whether we want to check OSHMEM parameters always or never])

#
# check for on_exit
#
AC_CHECK_FUNCS([on_exit])

#
#  OSHMEM profiling support
#
AC_ARG_ENABLE(oshmem-profile,
    AC_HELP_STRING([--enable-oshmem-profile],
                   [enable OSHMEM profiling (default: enabled)]))
AC_MSG_CHECKING([if want pshmem])
AS_IF([test "$enable_oshmem_profile" != "no"],
      [AC_MSG_RESULT([yes])],
      [AC_MSG_RESULT([no])])

# Bozo check
AS_IF([test "$enable_oshmem" = "no" && \
       test "$enable_oshmem_profile" = "yes"],
      [AC_MSG_WARN([OpenSHMEM profiling was requested, but OpenSHMEM has been explicitly disabled])
       AC_MSG_ERROR([Cannot continue])])

# Cannot check if we can enable profiling because it is not yet
# known whether the compiler supports weak symbols.


#
# Fortran bindings
#
AC_MSG_CHECKING([if want to build OSHMEM fortran bindings])
AC_ARG_ENABLE(oshmem-fortran,
AC_HELP_STRING([--enable-oshmem-fortran],
               [enable OSHMEM Fortran bindings (default: enabled if Fortran compiler found)]))
if test "$enable_oshmem" != "no" -a "$enable_oshmem_fortran" != "no"; then
# If no OMPI FORTRAN, bail
   AS_IF([test $OMPI_WANT_FORTRAN_BINDINGS -eq 0 -a "$enable_oshmem_fortran" = "yes"],
               [AC_MSG_RESULT([bad value OMPI_WANT_FORTRAN_BINDINGS: ($OMPI_WANT_FORTRAN_BINDINGS)])
                AC_MSG_WARN([Your request to --enable-oshmem-fortran can only be satisfied if fortran support is enabled in OMPI.
You see this message because OMPI fortran support has been explicitly disabled via --disable-mpi-fortran and OSHMEM fortran support was explicitly enabled with --enable-oshmem-fortran.
Configure will abort because you, a human, have asked for something that cannot be provided.])
                AC_MSG_ERROR([Cannot continue])])
    if test $OMPI_WANT_FORTRAN_BINDINGS -eq 1; then
        AC_MSG_RESULT([yes])
    else
        AC_MSG_RESULT([no])
    fi
else
    enable_oshmem_fortran=no
    AC_MSG_RESULT([no])
fi

#
# We can't set am_conditional here since it's yet unknown if there is
# valid Fortran compiler avaliable
#

]) dnl